Lin Xiaoman and Chen Chen were once the best of elementary school desk mates. In the carefree days of childhood, they made an innocent promise to stay together when they grew up. But after graduating, fate scattered them among the vast crowds of the world. Ten years later, they unexpectedly meet again on a university campus: Lin Xiaoman, the art department’s “funny girl,” and Chen Chen, the finance department’s “rational top student.” From their startled encounter in the library to an unspoken understanding beneath the cherry blossoms, from awkwardly getting reacquainted to steadily being there for each other, two seemingly different souls find their lives intertwined again during their university years. There are no wealthy-family feuds or dramatic clashes, only the warmth and growth of ordinary people. This is a story about time, fate, and choice. When a childhood promise begins to blossom again in the adult world, can they walk hand in hand toward the future they promised each other long ago?